Date: Fri, 19 Dec 2003 11:30:40 +0100 (CET) From: Michal Mertl <mime@traveller.cz> To: Jonathan Lennox <lennox@cs.columbia.edu> Cc: freebsd-current@freebsd.org Subject: Re: file descriptor leak in 5.2-RC Message-ID: <20031219112603.O37433@prg.traveller.cz> In-Reply-To: <16354.794.607812.829319@cnr.cs.columbia.edu> References: <20031217110353.U94352@prg.traveller.cz> <16354.794.607812.829319@cnr.cs.columbia.edu>
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On Thu, 18 Dec 2003, Jonathan Lennox wrote: > Michal Mertl writes: > > For several weeks now I see my -current (now RELENG_5_2 to help test the > > release) machine seems to be leaking file descriptors. After some time all > > files (up to kern.maxfiles) are consumed. > > Do you have any statically-linked programs that use pthreads? There's a FD > leak in gethostbyname(3) in multithreaded programs (actually, in the uthread > wrapper for kevent(2), but gethostbyname(3) is the most common reason you'd > see it) which was fixed in -CURRENT for programs linked with libc_r.so, but > not for those linked with libc_r.a. I'm afraid this is different. When your program terminates the descriptors are freed. You found a bug but it's not that serious as what I'm seeing - even when I go to single-user I see large openfiles. > > See PR bin/58687 <http://www.freebsd.org/cgi/query-pr.cgi?pr=bin/58687>. > This has a patch available. > > -- > Jonathan Lennox > lennox at cs dot columbia dot edu > -- Michal Mertl
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